Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
23/07/2026, 07:55
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-23_1db86125ca4de21944e56a4d916041c3_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-23_1db86125ca4de21944e56a4d916041c3_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-23_1db86125ca4de21944e56a4d916041c3_cryptolocker_elex.exe
- Size 42KB
- Sample260723-jsd6matfmc
- SHA256 052a515cd3ddb31c0b2fcea7f035989aa61c2d35f22ce98f3a43d88a0043c0a5
- MD5 1db86125ca4de21944e56a4d916041c3
- SHA1 de387c11a15141cf38ca70dc7289c3e641b6e108
- SHA512 55b2896ef6574e7f94f9fd5c48b18b94622ec3cd9967b5d36f8b564f9240275a9ae340f765390c0fa04ad510593d0592eb60039f5aa1ca2a21d55e463f72d0e9
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXC2:bgGYcA/53GAGgIvF/
- TLSH T1DB1374387FE62972E37BDFB586F691C67975B8223D16880D40CA53844833F65DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2372-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000024311-13.dat CryptoLocker_rule2 behavioral1/memory/1088-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1088-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-889581200-2041691093-2048517887-1000\Control Panel\International\Geo\Nation 2026-07-23_1db86125ca4de21944e56a4d916041c3_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 1088 hasfj.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-07-23_1db86125ca4de21944e56a4d916041c3_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hasfj.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2372 wrote to memory of 1088 2372 2026-07-23_1db86125ca4de21944e56a4d916041c3_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-23_1db86125ca4de21944e56a4d916041c3_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-23_1db86125ca4de21944e56a4d916041c3_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2372 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1088
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 5671f630394869ee5b5ce41376d2b19735adb235a8a592e6e4747be2fdba1643
- MD5 9a850652fc022dfd1630a99c2707f69b
- SHA1 e860e04ff648016f88fec9b6e0338dfb9af2a139
- SHA512 04b00a5a75d814eb1099df719941db579206be488de2a50a8d3e77c7a2a3ad395849204f49e109c5c454c725b3ca2fb127eb8ad1484c9b6f69e3d7fc61152fd9
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCm:bgGYcA/53GAGgIvFH
- TLSH T1CC1374387FE62972E37BDFB586F691C67975B8223D16880D40CA53844833F65DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH